<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>姓名案例_插值语法实现</title>
    <!-- 引入Vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <!-- 
        
     -->
    <!-- 准备好一个容器 -->
    <div id="root">
        姓:<input type="text" v-model="firstName"><br/>
        名:<input type="text" v-model="lastName"><br/>
        全名:<span>{{firstName.slice(0,3)}}-{{lastName}}</span><br/>
    </div>
</body>
<script type="text/javascript">
    Vue.config.productionTip = false; //阻止Vue启动时生成生产提示
    const vm = new Vue({
        el: '#root',
        data: {
            firstName: '张',
            lastName:'三'
        }
    });
</script>

</html>